Clock.



I. GREBNWALD.

CLOCK.

APPLIOATIOH FILED nu. zo, 1912.

Patented Aug. 20, 1912.

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WITNBIIB! AT ToRNeYs L GREENWAM)u CLOCK. APPLIOLTIO FILED JAN. 20, 19M.

Patented Aug.. 2G, 191.2.

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INVENTOK TTORN EYS time pieces.;

transmission mec ple,

. cation, reference' being ,between the faces in such UNITED STATESPATENT OFFICE.

ISADORE GREENWALD, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR Ol? ONE-HALF T0LANDAU BROTHERS, OF PITTSBURGH, PENNSYLVANIA, A COPARTNERSHIP.

CLOCK.

Specification of Letters -Patent. Application led January 20, 1912Serial No. 672,266.

Patented Aug. 20, 1912.

To allwwm 'it may concern:

Be it known that I, IsADoREGRnENwAID, a subject ofthe King of Hungary,residing at Pittsburgh, in the county 4of Allegheny and State ofPennsylvania, have invented certain new and. useful Improvements inClocks, of which the following is a specifihad therein to theaccompanying drawing.

and the/primary rev-ide aclock. having a .anism in connection with thevhands of the clock that produce anillusionary, eii'ectas'though thehands moved without ,any actuating, means, thereby mystifying .anobserver o the clock to that eX- tent as to cause sal-'greaterobservation and invention. is to in all probability an examination lof'thel clockfto determine the modus operandi.

Another object of this invention is to provide a c'lcckwith transparentfaces, one. of which serves functionally as adial,v and to concealthehand transmission mechanism a manner thatthe hands will have theappearance otmoving free of any actuating mechanism. y

A further object of this invention isto provide a pedestal, clock withatran'sparent body and-dial and with an operati'ii mech. y anism that isconcealed within the ase of the pedestal and faces vof the clock formoving the hands in front ofthe dial.

A 'still further object of` this. invention is to accomplish the aboveresults -by a sim durableand inexpensive clock mecha- Anism thatcan beeasily assembled in various forms calculated to produce a mystery as eto theexact operation of the mechanism.

With the Vabove 'and other' objects in view the invention resides in anovel construction,

combination and arrangement of parts to be hereinafter specificallydescribed and v y then claimed.

- in which Reference willnowrbe had tothe drawings, wherein likenumerals denote corresponding parts throughout the several views Figureiis 'afront'elevationf of theclock. Fig.'2 is a side elevation of thesame, partly broken away and partly in-section. Fig. 3 is an 'enlargedtransverse section of a por- Fig. 4 is a vertical sectional view of aportion of the clock. lFig.'

This invention relates to clocks, and other object ofmy 5 is aperspective view of a portion of one of the transparent transmissionAwheels or disks. Fig. 6 is an elevation of a detached gear wheeladapted to form part of the escapement of the clock and Fig. 7 is an elevation of .a detachedcheck pawl of the escapement. l

4A clock'in accordance with this inventioncomprises ,a hollow ornamentalbase 1 having a top plate 2 thereof :provided with a centralsleeve orsocket 3. 'Located within the base 1, is a'housingwi provided with acentral sleeve 5. .This housing contains a conventional formI .of clockmechanism or train, including springs, wheels, and elements common toanordinary clock. The bottom ofA the base 1 and the bottom of thehousing'et areopen, whereby easy access can be had to the clockmechanism for Winding purposes. Mounted in the sleeve 53y is the lowerend of a tubular hollow podes tal 7 retainedwithin the sleeve 5 by a serscrew i8. The upper end of the pedestal is fla-red and provided with aU-shaped frame A8% In `the Pedestal? there are 1oeated bushings 9,'orja. vertical revoluble shaft 10 that -has.the.lower end provided withal pinion 11 meshingwith one of the large gears of the clookmeehanism 6.The upper'end of the shaft 10has a yhorizontal cup shaped gear 12 for alpurpose that will presently appear. The frame .8* presents longitudinalshoulders' 13,` and mounted u on these shoulders againstthe end walls othe frame are the of circular .face plates land'. 16. These face platesare arranged in` parallelismand are connected b a strap" 17 having endstermina-ting at t e frame' 8". The strap 17 canv be soldered'orotherwise connected to the face plates 15 and 16. The face plate 15 hasthe inner side thereof provided with an annular seat 18 for 'a'transparent dial 19 having a vcentral ,opening 20.

'side of the face plate 16 has an annular seat 21 for a transparent backplate 22.V

The back plate 22 is retained upon the seat 21 by a ring 23`arranged'against the face the lower edge plate 16, said ring having thereof cutaway, as at 24 contiguous to the frame 8a. Mounted in the centralopening 2O of the dial 19 is a tubular bearing which is retained withinthe opening by a `sleeve 25: Journaled in the tubular bearing- Theinnerv

